mirror of
https://github.com/DarkflameUniverse/DarkflameServer.git
synced 2025-08-04 09:44:10 +00:00
Public release of the DLU server code!
Have fun!
This commit is contained in:
Unknown
670
thirdparty/raknet/Source/LightweightDatabaseServer.cpp
vendored
Normal file
670
thirdparty/raknet/Source/LightweightDatabaseServer.cpp
vendored
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@@ -0,0 +1,670 @@
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#include "LightweightDatabaseServer.h"
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#include "MessageIdentifiers.h"
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#include "BitStream.h"
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#include "StringCompressor.h"
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#include "RakPeerInterface.h"
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#include "TableSerializer.h"
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#include "RakAssert.h"
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#include "GetTime.h"
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#include "Rand.h"
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static const int SEND_PING_INTERVAL=15000;
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static const int DROP_SERVER_INTERVAL=75000;
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#ifdef _MSC_VER
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#pragma warning( push )
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#endif
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int LightweightDatabaseServer::DatabaseTableComp( char* const &key1, char* const &key2 )
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{
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return strcmp(key1, key2);
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}
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LightweightDatabaseServer::LightweightDatabaseServer()
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{
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}
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LightweightDatabaseServer::~LightweightDatabaseServer()
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{
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Clear();
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}
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DataStructures::Table *LightweightDatabaseServer::GetTable(char *tableName)
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{
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if (database.Has(tableName))
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return &(database.Get(tableName)->table);
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return 0;
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}
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DataStructures::Page<unsigned, DataStructures::Table::Row*, _TABLE_BPLUS_TREE_ORDER> *LightweightDatabaseServer::GetTableRows(char *tableName)
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{
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if (database.Has(tableName))
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database.Get(tableName)->table.GetRows().GetListHead();
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return 0;
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}
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DataStructures::Table* LightweightDatabaseServer::AddTable(char *tableName,
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bool allowRemoteQuery,
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bool allowRemoteUpdate,
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bool allowRemoteRemove,
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const char *queryPassword,
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const char *updatePassword,
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const char *removePassword,
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bool oneRowPerSystemAddress,
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bool onlyUpdateOwnRows,
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bool removeRowOnPingFailure,
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bool removeRowOnDisconnect,
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bool autogenerateRowIDs)
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{
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if (tableName==0 || tableName[0]==0)
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return 0;
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if (database.Has(tableName))
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return 0;
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DatabaseTable *databaseTable = new DatabaseTable;
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strncpy(databaseTable->tableName, tableName, _SIMPLE_DATABASE_TABLE_NAME_LENGTH-1);
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databaseTable->tableName[_SIMPLE_DATABASE_TABLE_NAME_LENGTH-1]=0;
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if (allowRemoteUpdate)
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{
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strncpy(databaseTable->updatePassword, updatePassword, _SIMPLE_DATABASE_PASSWORD_LENGTH-1);
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databaseTable->updatePassword[_SIMPLE_DATABASE_PASSWORD_LENGTH-1]=0;
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}
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else
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databaseTable->updatePassword[0]=0;
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if (allowRemoteQuery)
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{
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strncpy(databaseTable->queryPassword, queryPassword, _SIMPLE_DATABASE_PASSWORD_LENGTH-1);
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databaseTable->queryPassword[_SIMPLE_DATABASE_PASSWORD_LENGTH-1]=0;
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}
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else
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databaseTable->queryPassword[0]=0;
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if (allowRemoteRemove)
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{
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strncpy(databaseTable->removePassword, removePassword, _SIMPLE_DATABASE_PASSWORD_LENGTH-1);
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databaseTable->removePassword[_SIMPLE_DATABASE_PASSWORD_LENGTH-1]=0;
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}
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else
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databaseTable->removePassword[0]=0;
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if (allowRemoteUpdate)
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{
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databaseTable->allowRemoteUpdate=true;
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databaseTable->oneRowPerSystemAddress=oneRowPerSystemAddress;
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databaseTable->onlyUpdateOwnRows=onlyUpdateOwnRows;
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databaseTable->removeRowOnPingFailure=removeRowOnPingFailure;
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databaseTable->removeRowOnDisconnect=removeRowOnDisconnect;
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}
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else
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{
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// All these parameters are related to IP tracking, which is not done if remote updates are not allowed
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databaseTable->allowRemoteUpdate=true;
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databaseTable->oneRowPerSystemAddress=false;
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databaseTable->onlyUpdateOwnRows=false;
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databaseTable->removeRowOnPingFailure=false;
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databaseTable->removeRowOnDisconnect=false;
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}
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databaseTable->nextRowId=0;
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databaseTable->nextRowPingCheck=0;
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databaseTable->autogenerateRowIDs=autogenerateRowIDs;
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databaseTable->allowRemoteRemove=allowRemoteRemove;
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databaseTable->allowRemoteQuery=allowRemoteQuery;
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database.SetNew(databaseTable->tableName, databaseTable);
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if ( oneRowPerSystemAddress || onlyUpdateOwnRows || removeRowOnPingFailure || removeRowOnDisconnect)
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databaseTable->SystemAddressColumnIndex=databaseTable->table.AddColumn(SYSTEM_ID_COLUMN_NAME, DataStructures::Table::BINARY);
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else
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databaseTable->SystemAddressColumnIndex=(unsigned) -1;
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if (databaseTable->removeRowOnPingFailure)
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{
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databaseTable->lastPingResponseColumnIndex=databaseTable->table.AddColumn(LAST_PING_RESPONSE_COLUMN_NAME, DataStructures::Table::NUMERIC);
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databaseTable->nextPingSendColumnIndex=databaseTable->table.AddColumn(NEXT_PING_SEND_COLUMN_NAME, DataStructures::Table::NUMERIC);
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}
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else
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{
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databaseTable->lastPingResponseColumnIndex=(unsigned) -1;
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databaseTable->nextPingSendColumnIndex=(unsigned) -1;
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}
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return &(databaseTable->table);
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}
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bool LightweightDatabaseServer::RemoveTable(char *tableName)
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{
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LightweightDatabaseServer::DatabaseTable *databaseTable;
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databaseTable = database.Get(tableName);
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if (databaseTable==0)
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return false;
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// Be sure to call Delete on database before I do the actual pointer deletion since the key won't be valid after that time.
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database.Delete(tableName);
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databaseTable->table.Clear();
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delete databaseTable;
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return true;
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}
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void LightweightDatabaseServer::Clear(void)
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{
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unsigned i;
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for (i=0; i < database.Size(); i++)
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{
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database[i]->table.Clear();
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delete database[i];
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}
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database.Clear();
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}
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unsigned LightweightDatabaseServer::GetAndIncrementRowID(char *tableName)
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{
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LightweightDatabaseServer::DatabaseTable *databaseTable;
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databaseTable = database.Get(tableName);
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RakAssert(databaseTable);
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RakAssert(databaseTable->autogenerateRowIDs==true);
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return ++(databaseTable->nextRowId) - 1;
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}
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void LightweightDatabaseServer::OnAttach(RakPeerInterface *peer)
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{
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(void) peer;
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}
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void LightweightDatabaseServer::Update(RakPeerInterface *peer)
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{
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RakNetTime time=0;
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DatabaseTable *databaseTable;
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DataStructures::Page<unsigned, DataStructures::Table::Row*, _TABLE_BPLUS_TREE_ORDER> *cur;
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unsigned i,j;
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DataStructures::Table::Row* row;
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DataStructures::List<unsigned> removeList;
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SystemAddress systemAddress;
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// periodic ping if removing system that do not respond to pings.
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for (i=0; i < database.Size(); i++)
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{
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databaseTable=database[i];
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if (databaseTable->removeRowOnPingFailure)
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{
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// Reading the time is slow - only do it once if necessary.
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if (time==0)
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time = RakNet::GetTime();
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if (databaseTable->nextRowPingCheck < time)
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{
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databaseTable->nextRowPingCheck=time+1000+(randomMT()%1000);
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DataStructures::BPlusTree<unsigned, DataStructures::Table::Row*, _TABLE_BPLUS_TREE_ORDER> &rows = databaseTable->table.GetRows();
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cur = rows.GetListHead();
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while (cur)
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{
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// Mark dropped entities
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for (j=0; j < (unsigned)cur->size; j++)
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{
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row = cur->data[j];
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if (time - (unsigned int) row->cells[databaseTable->lastPingResponseColumnIndex]->i > (unsigned int) DROP_SERVER_INTERVAL)
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removeList.Insert(cur->keys[j]);
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}
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cur=cur->next;
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}
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// Remove dropped entities
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for (j=0; j < removeList.Size(); j++)
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databaseTable->table.RemoveRow(removeList[i]);
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removeList.Clear(true);
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cur = rows.GetListHead();
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// Ping remaining entities if they are not connected. If they are connected just increase the ping interval.
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while (cur)
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{
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for (j=0; j < (unsigned)cur->size; j++)
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{
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row = cur->data[j];
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if (row->cells[databaseTable->nextPingSendColumnIndex]->i < (int) time)
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{
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row->cells[databaseTable->SystemAddressColumnIndex]->Get((char*)&systemAddress, 0);
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if (peer->IsConnected(systemAddress)==false)
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{
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peer->Ping(systemAddress.ToString(false), systemAddress.port, false);
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}
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else
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{
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// Consider the fact that they are connected to be a ping response
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row->cells[databaseTable->lastPingResponseColumnIndex]->i=time;
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}
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row->cells[databaseTable->nextPingSendColumnIndex]->i=time+SEND_PING_INTERVAL+(randomMT()%1000);
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}
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}
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cur=cur->next;
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}
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}
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}
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}
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}
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PluginReceiveResult LightweightDatabaseServer::OnReceive(RakPeerInterface *peer, Packet *packet)
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{
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switch (packet->data[0])
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{
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case ID_DATABASE_QUERY_REQUEST:
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OnQueryRequest(peer, packet);
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return RR_STOP_PROCESSING_AND_DEALLOCATE;
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case ID_DATABASE_UPDATE_ROW:
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OnUpdateRow(peer, packet);
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return RR_STOP_PROCESSING_AND_DEALLOCATE;
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case ID_DATABASE_REMOVE_ROW:
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OnRemoveRow(peer, packet);
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return RR_STOP_PROCESSING_AND_DEALLOCATE;
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case ID_DISCONNECTION_NOTIFICATION:
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case ID_CONNECTION_LOST:
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RemoveRowsFromIP(packet->systemAddress);
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return RR_CONTINUE_PROCESSING;
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case ID_PONG:
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OnPong(peer, packet);
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return RR_CONTINUE_PROCESSING;
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}
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return RR_CONTINUE_PROCESSING;
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}
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void LightweightDatabaseServer::OnShutdown(RakPeerInterface *peer)
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{
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(void) peer;
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}
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void LightweightDatabaseServer::OnCloseConnection(RakPeerInterface *peer, SystemAddress systemAddress)
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{
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(void) peer;
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RemoveRowsFromIP(systemAddress);
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}
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void LightweightDatabaseServer::OnQueryRequest(RakPeerInterface *peer, Packet *packet)
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{
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RakNet::BitStream inBitstream(packet->data, packet->length, false);
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LightweightDatabaseServer::DatabaseTable *databaseTable = DeserializeClientHeader(&inBitstream, peer, packet, 0);
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if (databaseTable==0)
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return;
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if (databaseTable->allowRemoteQuery==false)
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return;
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unsigned char numColumnSubset;
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RakNet::BitStream outBitstream;
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unsigned i;
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if (inBitstream.Read(numColumnSubset)==false)
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return;
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unsigned char columnName[256];
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unsigned columnIndicesSubset[256];
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unsigned columnIndicesCount;
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for (i=0,columnIndicesCount=0; i < numColumnSubset; i++)
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{
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stringCompressor->DecodeString((char*)columnName, 256, &inBitstream);
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unsigned colIndex = databaseTable->table.ColumnIndex((char*)columnName);
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if (colIndex!=(unsigned)-1)
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columnIndicesSubset[columnIndicesCount++]=colIndex;
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}
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unsigned char numNetworkedFilters;
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if (inBitstream.Read(numNetworkedFilters)==false)
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return;
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DatabaseFilter networkedFilters[256];
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for (i=0; i < numNetworkedFilters; i++)
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{
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if (networkedFilters[i].Deserialize(&inBitstream)==false)
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return;
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}
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unsigned rowIds[256];
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unsigned char numRowIDs;
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if (inBitstream.Read(numRowIDs)==false)
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return;
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for (i=0; i < numRowIDs; i++)
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inBitstream.Read(rowIds[i]);
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// Convert the safer and more robust networked database filter to the more efficient form the table actually uses.
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DataStructures::Table::FilterQuery tableFilters[256];
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unsigned numTableFilters=0;
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for (i=0; i < numNetworkedFilters; i++)
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{
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tableFilters[numTableFilters].columnIndex=databaseTable->table.ColumnIndex(networkedFilters[i].columnName);
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if (tableFilters[numTableFilters].columnIndex==(unsigned)-1)
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continue;
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if (networkedFilters[i].columnType!=databaseTable->table.GetColumns()[tableFilters[numTableFilters].columnIndex].columnType)
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continue;
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tableFilters[numTableFilters].operation=networkedFilters[i].operation;
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// It's important that I store a pointer to the class here or the destructor of the class will deallocate the cell twice
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tableFilters[numTableFilters++].cellValue=&(networkedFilters[i].cellValue);
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}
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DataStructures::Table queryResult;
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databaseTable->table.QueryTable(columnIndicesSubset, columnIndicesCount, tableFilters, numTableFilters, rowIds, numRowIDs, &queryResult);
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outBitstream.Write((MessageID)ID_DATABASE_QUERY_REPLY);
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TableSerializer::SerializeTable(&queryResult, &outBitstream);
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peer->Send(&outBitstream, HIGH_PRIORITY, RELIABLE_ORDERED, 0, packet->systemAddress, false);
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}
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void LightweightDatabaseServer::OnUpdateRow(RakPeerInterface *peer, Packet *packet)
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{
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RakNet::BitStream inBitstream(packet->data, packet->length, false);
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LightweightDatabaseServer::DatabaseTable *databaseTable = DeserializeClientHeader(&inBitstream, peer, packet, 1);
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if (databaseTable==0)
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{
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printf("ERROR: LightweightDatabaseServer::OnUpdateRow databaseTable==0\n");
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return;
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}
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if (databaseTable->allowRemoteUpdate==false)
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{
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printf("Warning: LightweightDatabaseServer::OnUpdateRow databaseTable->allowRemoteUpdate==false\n");
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return;
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}
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unsigned char updateMode;
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bool hasRowId=false;
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unsigned rowId;
|
||||
unsigned i;
|
||||
DataStructures::Table::Row *row;
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inBitstream.Read(updateMode);
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inBitstream.Read(hasRowId);
|
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if (hasRowId)
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inBitstream.Read(rowId);
|
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else
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rowId=(unsigned) -1; // Not used here but remove the debugging check
|
||||
unsigned char numCellUpdates;
|
||||
if (inBitstream.Read(numCellUpdates)==false)
|
||||
return;
|
||||
// Read the updates for the row
|
||||
DatabaseCellUpdate cellUpdates[256];
|
||||
for (i=0; i < numCellUpdates; i++)
|
||||
{
|
||||
if (cellUpdates[i].Deserialize(&inBitstream)==false)
|
||||
{
|
||||
printf("ERROR: LightweightDatabaseServer::OnUpdateRow cellUpdates deserialize failed i=%i numCellUpdates=%i\n",i,numCellUpdates);
|
||||
return;
|
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}
|
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}
|
||||
|
||||
if ((RowUpdateMode)updateMode==RUM_UPDATE_EXISTING_ROW)
|
||||
{
|
||||
if (hasRowId==false)
|
||||
{
|
||||
unsigned rowKey;
|
||||
row = GetRowFromIP(databaseTable, packet->systemAddress, &rowKey);
|
||||
if (row==0)
|
||||
printf("ERROR: LightweightDatabaseServer::OnUpdateRow updateMode==RUM_UPDATE_EXISTING_ROW hasRowId==false");
|
||||
}
|
||||
else
|
||||
{
|
||||
|
||||
row = databaseTable->table.GetRowByID(rowId);
|
||||
if (row==0 || (databaseTable->onlyUpdateOwnRows && RowHasIP(row, packet->systemAddress, databaseTable->SystemAddressColumnIndex)==false))
|
||||
{
|
||||
if (row==0)
|
||||
printf("ERROR: LightweightDatabaseServer::OnUpdateRow row = databaseTable->table.GetRowByID(rowId); row==0\n");
|
||||
else
|
||||
printf("ERROR: LightweightDatabaseServer::OnUpdateRow row = databaseTable->table.GetRowByID(rowId); databaseTable->onlyUpdateOwnRows && RowHasIP\n");
|
||||
|
||||
return; // You can't update some other system's row
|
||||
}
|
||||
}
|
||||
}
|
||||
else if ((RowUpdateMode)updateMode==RUM_UPDATE_OR_ADD_ROW)
|
||||
{
|
||||
if (hasRowId)
|
||||
row = databaseTable->table.GetRowByID(rowId);
|
||||
else
|
||||
{
|
||||
unsigned rowKey;
|
||||
row = GetRowFromIP(databaseTable, packet->systemAddress, &rowKey);
|
||||
}
|
||||
|
||||
if (row==0)
|
||||
{
|
||||
row=AddRow(databaseTable, packet->systemAddress, hasRowId, rowId);
|
||||
if (row==0)
|
||||
{
|
||||
printf("ERROR: LightweightDatabaseServer::OnUpdateRow updateMode==RUM_UPDATE_OR_ADD_ROW; row=AddRow; row==0\n");
|
||||
return;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// Existing row
|
||||
if (databaseTable->onlyUpdateOwnRows && RowHasIP(row, packet->systemAddress, databaseTable->SystemAddressColumnIndex)==false)
|
||||
{
|
||||
SystemAddress sysAddr;
|
||||
memcpy(&sysAddr, row->cells[databaseTable->SystemAddressColumnIndex]->c, sizeof(SystemAddress));
|
||||
|
||||
printf("ERROR: LightweightDatabaseServer::OnUpdateRow updateMode==RUM_UPDATE_OR_ADD_ROW; databaseTable->onlyUpdateOwnRows && RowHasIP. packet->systemAddress=%s sysAddr=%s\n",
|
||||
packet->systemAddress.ToString(true), sysAddr.ToString(true));
|
||||
|
||||
return; // You can't update some other system's row
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
RakAssert((RowUpdateMode)updateMode==RUM_ADD_NEW_ROW);
|
||||
|
||||
row=AddRow(databaseTable, packet->systemAddress, hasRowId, rowId);
|
||||
if (row==0)
|
||||
{
|
||||
printf("ERROR: LightweightDatabaseServer::OnUpdateRow updateMode==RUM_ADD_NEW_ROW; row==0\n");
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
unsigned columnIndex;
|
||||
for (i=0; i < numCellUpdates; i++)
|
||||
{
|
||||
columnIndex=databaseTable->table.ColumnIndex(cellUpdates[i].columnName);
|
||||
RakAssert(columnIndex!=(unsigned)-1); // Unknown column name
|
||||
if (columnIndex!=(unsigned)-1 && columnIndex!=databaseTable->lastPingResponseColumnIndex && columnIndex!=databaseTable->nextPingSendColumnIndex && columnIndex!=databaseTable->SystemAddressColumnIndex)
|
||||
{
|
||||
if (cellUpdates[i].cellValue.isEmpty)
|
||||
row->cells[columnIndex]->Clear();
|
||||
else if (cellUpdates[i].columnType==databaseTable->table.GetColumnType(columnIndex))
|
||||
{
|
||||
if (cellUpdates[i].columnType==DataStructures::Table::NUMERIC)
|
||||
{
|
||||
row->UpdateCell(columnIndex, cellUpdates[i].cellValue.i);
|
||||
}
|
||||
else if (cellUpdates[i].columnType==DataStructures::Table::BINARY)
|
||||
{
|
||||
row->UpdateCell(columnIndex, cellUpdates[i].cellValue.i, cellUpdates[i].cellValue.c);
|
||||
}
|
||||
else
|
||||
{
|
||||
RakAssert(cellUpdates[i].columnType==DataStructures::Table::STRING);
|
||||
row->UpdateCell(columnIndex, cellUpdates[i].cellValue.c);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
void LightweightDatabaseServer::OnRemoveRow(RakPeerInterface *peer, Packet *packet)
|
||||
{
|
||||
RakNet::BitStream inBitstream(packet->data, packet->length, false);
|
||||
LightweightDatabaseServer::DatabaseTable *databaseTable = DeserializeClientHeader(&inBitstream, peer, packet, 0);
|
||||
if (databaseTable==0)
|
||||
return;
|
||||
if (databaseTable->allowRemoteRemove==false)
|
||||
return;
|
||||
unsigned rowId;
|
||||
inBitstream.Read(rowId);
|
||||
databaseTable->table.RemoveRow(rowId);
|
||||
}
|
||||
void LightweightDatabaseServer::OnPong(RakPeerInterface *peer, Packet *packet)
|
||||
{
|
||||
(void) peer;
|
||||
|
||||
unsigned databaseIndex;
|
||||
DatabaseTable *databaseTable;
|
||||
unsigned curIndex;
|
||||
SystemAddress systemAddress;
|
||||
RakNetTime time=0;
|
||||
for (databaseIndex=0; databaseIndex < database.Size(); databaseIndex++)
|
||||
{
|
||||
databaseTable=database[databaseIndex];
|
||||
if (databaseTable->removeRowOnPingFailure)
|
||||
{
|
||||
if (time==0)
|
||||
time=RakNet::GetTime();
|
||||
|
||||
DataStructures::BPlusTree<unsigned, DataStructures::Table::Row*, _TABLE_BPLUS_TREE_ORDER> &rows = databaseTable->table.GetRows();
|
||||
DataStructures::Page<unsigned, DataStructures::Table::Row*, _TABLE_BPLUS_TREE_ORDER> *cur = rows.GetListHead();
|
||||
|
||||
while (cur)
|
||||
{
|
||||
for (curIndex=0; curIndex < (unsigned) cur->size; curIndex++)
|
||||
{
|
||||
cur->data[curIndex]->cells[databaseTable->SystemAddressColumnIndex]->Get((char*)&systemAddress,0);
|
||||
if (systemAddress==packet->systemAddress)
|
||||
{
|
||||
cur->data[curIndex]->cells[databaseTable->lastPingResponseColumnIndex]->i=time;
|
||||
}
|
||||
}
|
||||
cur=cur->next;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
LightweightDatabaseServer::DatabaseTable * LightweightDatabaseServer::DeserializeClientHeader(RakNet::BitStream *inBitstream, RakPeerInterface *peer, Packet *packet, int mode)
|
||||
{
|
||||
RakNet::BitStream outBitstream;
|
||||
bool hasPassword=false;
|
||||
char password[_SIMPLE_DATABASE_PASSWORD_LENGTH];
|
||||
inBitstream->IgnoreBits(8);
|
||||
char tableName[_SIMPLE_DATABASE_TABLE_NAME_LENGTH];
|
||||
stringCompressor->DecodeString(tableName, _SIMPLE_DATABASE_TABLE_NAME_LENGTH, inBitstream);
|
||||
DatabaseTable *databaseTable = database.Get(tableName);
|
||||
if (databaseTable==0)
|
||||
{
|
||||
outBitstream.Write((MessageID)ID_DATABASE_UNKNOWN_TABLE);
|
||||
peer->Send(&outBitstream, HIGH_PRIORITY, RELIABLE_ORDERED, 0, packet->systemAddress, false);
|
||||
return 0;
|
||||
}
|
||||
const char *dbPass;
|
||||
if (mode==0)
|
||||
dbPass=databaseTable->queryPassword;
|
||||
else if (mode==1)
|
||||
dbPass=databaseTable->updatePassword;
|
||||
else
|
||||
dbPass=databaseTable->removePassword;
|
||||
|
||||
inBitstream->Read(hasPassword);
|
||||
if (hasPassword)
|
||||
{
|
||||
if (stringCompressor->DecodeString(password, _SIMPLE_DATABASE_PASSWORD_LENGTH, inBitstream)==false)
|
||||
return 0;
|
||||
if (databaseTable->queryPassword[0] && strcmp(password, dbPass)!=0)
|
||||
{
|
||||
outBitstream.Write((MessageID)ID_DATABASE_INCORRECT_PASSWORD);
|
||||
peer->Send(&outBitstream, HIGH_PRIORITY, RELIABLE_ORDERED, 0, packet->systemAddress, false);
|
||||
// Short ban to prevent brute force password attempts
|
||||
peer->AddToBanList(packet->systemAddress.ToString(false), 1000);
|
||||
// Don't send a disconnection notification so it closes the connection right away.
|
||||
peer->CloseConnection(packet->systemAddress, false, 0);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
else if (dbPass[0])
|
||||
{
|
||||
outBitstream.Write((MessageID)ID_DATABASE_INCORRECT_PASSWORD);
|
||||
peer->Send(&outBitstream, HIGH_PRIORITY, RELIABLE_ORDERED, 0, packet->systemAddress, false);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return databaseTable;
|
||||
}
|
||||
|
||||
DataStructures::Table::Row * LightweightDatabaseServer::GetRowFromIP(DatabaseTable *databaseTable, SystemAddress systemAddress, unsigned *rowKey)
|
||||
{
|
||||
DataStructures::BPlusTree<unsigned, DataStructures::Table::Row*, _TABLE_BPLUS_TREE_ORDER> &rows = databaseTable->table.GetRows();
|
||||
DataStructures::Page<unsigned, DataStructures::Table::Row*, _TABLE_BPLUS_TREE_ORDER> *cur = rows.GetListHead();
|
||||
DataStructures::Table::Row* row;
|
||||
unsigned i;
|
||||
while (cur)
|
||||
{
|
||||
for (i=0; i < (unsigned)cur->size; i++)
|
||||
{
|
||||
row = cur->data[i];
|
||||
if (RowHasIP(row, systemAddress, databaseTable->SystemAddressColumnIndex ))
|
||||
{
|
||||
if (rowKey)
|
||||
*rowKey=cur->keys[i];
|
||||
return row;
|
||||
}
|
||||
}
|
||||
cur=cur->next;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
bool LightweightDatabaseServer::RowHasIP(DataStructures::Table::Row *row, SystemAddress systemAddress, unsigned SystemAddressColumnIndex)
|
||||
{
|
||||
SystemAddress sysAddr;
|
||||
memcpy(&sysAddr, row->cells[SystemAddressColumnIndex]->c, sizeof(SystemAddress));
|
||||
return sysAddr==systemAddress;
|
||||
|
||||
// Doesn't work in release for some reason
|
||||
//RakAssert(row->cells[SystemAddressColumnIndex]->isEmpty==false);
|
||||
//if (memcmp(row->cells[SystemAddressColumnIndex]->c, &systemAddress, sizeof(SystemAddress))==0)
|
||||
// return true;
|
||||
// return false;
|
||||
}
|
||||
DataStructures::Table::Row * LightweightDatabaseServer::AddRow(LightweightDatabaseServer::DatabaseTable *databaseTable, SystemAddress systemAddress, bool hasRowId, unsigned rowId)
|
||||
{
|
||||
DataStructures::Table::Row *row;
|
||||
if (databaseTable->oneRowPerSystemAddress && GetRowFromIP(databaseTable, systemAddress, 0))
|
||||
return 0; // This system already has a row.
|
||||
|
||||
if (databaseTable->autogenerateRowIDs==false)
|
||||
{
|
||||
// For a new row:
|
||||
// rowID required but not specified OR
|
||||
// rowId specified but already in the table
|
||||
// Then exit
|
||||
if (hasRowId==false || databaseTable->table.GetRowByID(rowId))
|
||||
return 0;
|
||||
}
|
||||
else
|
||||
rowId=databaseTable->nextRowId++;
|
||||
|
||||
// Add new row
|
||||
row = databaseTable->table.AddRow(rowId);
|
||||
|
||||
// Set IP and last update time
|
||||
if ( databaseTable->oneRowPerSystemAddress || databaseTable->onlyUpdateOwnRows || databaseTable->removeRowOnPingFailure || databaseTable->removeRowOnDisconnect)
|
||||
row->cells[databaseTable->SystemAddressColumnIndex]->Set((char*)&systemAddress, sizeof(SystemAddress));
|
||||
if (databaseTable->removeRowOnPingFailure)
|
||||
{
|
||||
RakNetTime time = RakNet::GetTime();
|
||||
row->cells[databaseTable->lastPingResponseColumnIndex]->Set(time);
|
||||
row->cells[databaseTable->nextPingSendColumnIndex]->Set(time+SEND_PING_INTERVAL);
|
||||
}
|
||||
|
||||
return row;
|
||||
}
|
||||
void LightweightDatabaseServer::RemoveRowsFromIP(SystemAddress systemAddress)
|
||||
{
|
||||
// Remove rows for tables that do so on a system disconnect
|
||||
DatabaseTable *databaseTable;
|
||||
DataStructures::List<unsigned> removeList;
|
||||
DataStructures::Page<unsigned, DataStructures::Table::Row*, _TABLE_BPLUS_TREE_ORDER> *cur;
|
||||
unsigned i,j;
|
||||
for (i=0; i < database.Size(); i++)
|
||||
{
|
||||
databaseTable=database[i];
|
||||
if (databaseTable->removeRowOnDisconnect)
|
||||
{
|
||||
DataStructures::BPlusTree<unsigned, DataStructures::Table::Row*, _TABLE_BPLUS_TREE_ORDER> &rows = databaseTable->table.GetRows();
|
||||
cur = rows.GetListHead();
|
||||
while (cur)
|
||||
{
|
||||
// Mark dropped entities
|
||||
for (j=0; j < (unsigned)cur->size; j++)
|
||||
{
|
||||
if (RowHasIP(cur->data[j], systemAddress, databaseTable->SystemAddressColumnIndex))
|
||||
removeList.Insert(cur->keys[j]);
|
||||
}
|
||||
cur=cur->next;
|
||||
}
|
||||
|
||||
for (j=0; j < removeList.Size(); j++)
|
||||
databaseTable->table.RemoveRow(removeList[j]);
|
||||
removeList.Clear(true);
|
||||
}
|
||||
}
|
||||
}
|
||||
#ifdef _MSC_VER
|
||||
#pragma warning( pop )
|
||||
#endif
|
||||
Reference in New Issue
Block a user